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Multi-stage ammonia production for sorption selective catalytic reduction of NO

Chen ZHANG, Guoliang AN, Liwei WANG, Shaofei WU

Frontiers in Energy 2022, Volume 16, Issue 5,   Pages 840-851 doi: 10.1007/s11708-021-0797-1

Abstract: Sorption selective catalytic reduction of nitrogen oxides (NOx) (sorption-SCR) hasever been proposed for replacing commercial urea selective catalytic reduction of NOx (urea-SCR), while only the single-stage sorption cycle is hitherto adopted for sorption-SCR.all present overwhelming advantages over urea-SCR considering the much higher NOxof AdBlue for urea-SCR.

Keywords： selective catalytic reduction (SCR)     nitrogen oxides (NOx)     ammonia     composite sorbent    

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Selective catalytic reduction of NO

Pavlo I. Kyriienko

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 471-491 doi: 10.1007/s11705-019-1847-7

Abstract: Research results regarding selective catalytic reduction (SCR) of NO with ethanol and other C oxygenatesWays to improve the catalysts for the SCR of NO with C oxygenates are outlined.

Keywords： SCR     nitrogen oxides     silver-alumina catalyst     silver species     ethanol     oxygenates    

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Effects of support acidity on the reaction mechanisms of selective catalytic reduction of NO by CH

Shicheng XU, Junhua LI, Dong YANG, Jiming HAO

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 2,   Pages 186-193 doi: 10.1007/s11783-009-0016-5

Abstract: The reaction mechanisms of selective catalytic reduction (SCR) of nitric oxide (NO) by methane (CH )acidity of solid superacid played an important role in determining the reaction mechanisms and the catalyticnsted acid sites would not necessarily lead to better catalytic performance, however, since the activeThe reaction involving NO moiety was likely to be determined by the step of reduction of NO.Therefore, to enhance the SCR activity of solid superacid catalysts, reactions between appropriate couples

Keywords： selective catalytic reduction (SCR)     nitric oxide (NO)     methane     support acidity     Br?    

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Design and operational considerations for selective catalytic reduction technologies at coal-fired boilers

Jeremy J. SCHREIFELS, Shuxiao WANG, Jiming HAO

Frontiers in Energy 2012, Volume 6, Issue 1,   Pages 98-105 doi: 10.1007/s11708-012-0171-4

Abstract: Protection (MEP) has introduced new NO emission control policies to encourage the installation of selectivecatalytic reduction (SCR) technologies on a large number of coal-fired electric power plants.There is, however, limited experience with SCR in China.It is therefore useful to explore the lessons from the use of SCR technologies in other countries.If these challenges are properly addressed, SCR can reliably and effectively remove up to 90% of NO

Keywords： nitrogen oxides (NOx)     coal     selective catalytic reduction (SCR)     air pollution    

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Precise regulation of acid pretreatment for red mud SCR catalyst: Targeting on optimizing the acidity

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 7, doi: 10.1007/s11783-021-1447-x

Abstract:

• The optimum SCR activity was realized by tuning the acid pretreatment

Keywords： Air pollution control     Nitrogen oxides     Selective catalytic reduction     Red mud     Solid waste utilization    

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NiBO (B = Mn or Co) catalysts for NH-SCR of NO at low-temperature in microwave field

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1696-y

Abstract:

● Microwave-assisted catalytic NH3-SCR reaction over spinel

Keywords： Microwave field     Spinel oxides     NOx     Selective catalytic reduction    

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Design guidelines for urea hydrolysers for ammonia demand of the SCR DENOX project in coal-fired power

Peng ZHENG, Xuan YAO, Wei ZHENG

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 127-132 doi: 10.1007/s11708-012-0225-7

Abstract: Ammonia is highly volatile and will present substantial environmental and operation hazards when leaking into the air. However, ammonia is the most common reactant in the DENOX project to eliminate NO in the flue gas. The storage and transportation of liquid ammonia has always been a dilemma of the power plant. Urea is a perfect substitute source for ammonia in the plant. Urea hydrolysis technology can easily convert urea into ammonia with low expense. Presently, there is still no self-depended mature urea hydrolysis technology for the DENOX project in China; therefore, this paper proposes several guidelines to design the urea hydrolyser by theoretical analysis. Based on theoretical analysis, a simulation model is built to simulate the chemical reaction in the urea hydrolyser and is validated by the operational data of the commercial hydrolyser revealed in the literature. This paper endeavors to propose suggestions and guidelines to develop domestically urea hydrolysers in China.

Keywords： urea     hydrolyser     ammonia     selective catalytic reduction (SCR)    

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Selective reduction of NO by photo-SCR with ammonia in an annular fixed-film photoreactor

YiangChen CHOU, Young KU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 149-155 doi: 10.1007/s11783-010-0296-9

Abstract: Gaseous NO was photocatalytically reduced at room temperature by photo-assisted selective catalytic reduction(photo-SCR) with ammonia over TiO in this study.NO reduction efficiency and N selectivity were determined from gases composition at the outlet streamExperimental results showed that selective catalytic reduction of NO with ammonia over TiO in the presencekinetic model proposed in this study can be used to reasonably describe the reaction mechanism of photo-SCR

Keywords： photo-SCR     photocatalysis     NO reduction     Eley-Rideal model    

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Effect of K and Ca on catalytic activity of Mn-CeO

Boxiong SHEN, Lidan DENG, Jianhong CHEN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 4,   Pages 512-517 doi: 10.1007/s11783-013-0519-y

Abstract: Mn-CeO /Ti-pillared clay (PILC) is an attractive catalyst for selective catalytic reduction of NO atcatalysts, the techniques of NH -temperature programmed desorption (TPD), H -temperature programmed reductionThe activities of Mn-CeO /Ti-PILC, (Ca)Mn-CeO /Ti-PILC and (K)Mn-CeO /Ti-PILC for NH -selective catalyticreduction (SCR) reaction at low temperature were investigated.The results showed that with the dopes of K and Ca on the catalysts, the SCR activities of the catalysts

Keywords： Mn-CeOx/Ti-pillared clay (PILC)     low-temperature selective catalytic reduction(SCR)     K and Ca poisoning effect    

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dispersion behavior of Co3O4 on HZSM-5 support: designing applicable catalysts for selectivecatalytic reduction of nitrogen oxides by ammonia

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1741-1754 doi: 10.1007/s11705-023-2332-x

Abstract: theory, Co3O4/ZSM-5 catalysts with different loadings have been prepared for selectivecatalytic reduction of nitrogen oxides by ammonia.is favorable to generate the two kinds of active sites, hence promoting the performance of ammonia selectivecatalytic reduction of nitrogen oxide.

Keywords： Co3O4/ZSM-5     NOx-SCR by NH3     monolayer dispersion    

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Insight into the promotion mechanism of activated carbon on the monolithic honeycomb red mud catalyst for selectivecatalytic reduction of NO

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1337-7

Abstract:

• Activated carbon was proposed to be an efficient accelerant for molded red mud catalyst.

Keywords： NOx     Selective catalytic reduction     Iron-based catalyst     Red mud     Monolithic catalyst    

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Effect of different acid anions on highly efficient Ce-based catalysts for selective catalytic reduction

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1399-1411 doi: 10.1007/s11705-023-2345-5

Abstract: sub>, CeVO4, Ce2(SO4)3) were synthesized and used for the selectivecatalytic reduction (SCR) of NO by NH3.NH3-SCR performances were conducted in the temperature range of 80 to 400 °C.The catalytic efficiencies of the three catalysts are as follow: CePO4 > CeVO4spectroscopy analysis, NH3 temperature programmed desorption, H2 temperature programmed reduction

Keywords： CePO4     CeVO4     Ce2(SO4)3     selective catalytic reduction    

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Characterization and performance of V

Caiting LI, Qun LI, Pei LU, Huafei CUI, Guangming ZENG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 156-161 doi: 10.1007/s11783-010-0295-x

Abstract: The catalysts were evaluated for low temperature selective catalytic reduction (SCR) of NO with ammoniaThe effects of O and SO on catalytic activity were also studied.

Keywords： V2O5/CeO2 catalysts     NH3-SCR (selective catalytic reduction    

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Metal-organic framework loaded manganese oxides as efficient catalysts for low-temperature selectivecatalytic reduction of NO with NH

Minhua Zhang, Baojuan Huang, Haoxi Jiang, Yifei Chen

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 594-602 doi: 10.1007/s11705-017-1668-5

Abstract: A mild deposition method was used to fabricate Mn-based catalysts on a UiO-66 carrier for the selectivecatalytic reduction of NO by NH (NH -SCR).The catalyst with 8.5 wt-% MnO loading had the highest catalytic activity for NH -SCR with a wide temperaturethe MnO and the Zr oxide secondary building units of the UiO-66 which has a positive effect on the catalytic

Keywords： metal-organic framework     selective catalytic reduction     manganese oxides     deNOx     SO   

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Low-temperature selective catalytic reduction of NO with NH based on MnO-CeO/ACFN

SHEN Boxiong, LIU Ting, SHI Zhanliang, SHI Jianwei, YANG Tingting, ZHAO Ning

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 325-329 doi: 10.1007/s11705-008-0053-9

Abstract: MnO-CeO/ACFN were prepared by the impregnation method and used as catalyst for selective catalytic reductioncarbon fiber (ACF) increased after the treatment with nitric acid, which was favorable to improve the catalytic

Keywords： preparation     conversion     favorable     selective catalytic     MnO-CeO/ACFN    

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Title Author Date Type Operation

Multi-stage ammonia production for sorption selective catalytic reduction of NO

Chen ZHANG, Guoliang AN, Liwei WANG, Shaofei WU

Journal Article

Selective catalytic reduction of NO

Pavlo I. Kyriienko

Journal Article

Effects of support acidity on the reaction mechanisms of selective catalytic reduction of NO by CH

Shicheng XU, Junhua LI, Dong YANG, Jiming HAO

Journal Article

Design and operational considerations for selective catalytic reduction technologies at coal-fired boilers

Jeremy J. SCHREIFELS, Shuxiao WANG, Jiming HAO

Journal Article

Precise regulation of acid pretreatment for red mud SCR catalyst: Targeting on optimizing the acidity

Journal Article

NiBO (B = Mn or Co) catalysts for NH-SCR of NO at low-temperature in microwave field

Journal Article

Design guidelines for urea hydrolysers for ammonia demand of the SCR DENOX project in coal-fired power

Peng ZHENG, Xuan YAO, Wei ZHENG

Journal Article

Selective reduction of NO by photo-SCR with ammonia in an annular fixed-film photoreactor

YiangChen CHOU, Young KU

Journal Article

Effect of K and Ca on catalytic activity of Mn-CeO

Boxiong SHEN, Lidan DENG, Jianhong CHEN

Journal Article

dispersion behavior of Co3O4 on HZSM-5 support: designing applicable catalysts for selectivecatalytic reduction of nitrogen oxides by ammonia

Journal Article

Insight into the promotion mechanism of activated carbon on the monolithic honeycomb red mud catalyst for selectivecatalytic reduction of NO

Journal Article

Effect of different acid anions on highly efficient Ce-based catalysts for selective catalytic reduction

Journal Article

Characterization and performance of V

Caiting LI, Qun LI, Pei LU, Huafei CUI, Guangming ZENG

Journal Article

Metal-organic framework loaded manganese oxides as efficient catalysts for low-temperature selectivecatalytic reduction of NO with NH

Minhua Zhang, Baojuan Huang, Haoxi Jiang, Yifei Chen

Journal Article

Low-temperature selective catalytic reduction of NO with NH based on MnO-CeO/ACFN

SHEN Boxiong, LIU Ting, SHI Zhanliang, SHI Jianwei, YANG Tingting, ZHAO Ning

Journal Article